[feat] 추천활동 반환 시 40점 이상의 활동만 리턴하도록 변경

Author: hyunmuam

src/main/java/nambang_swag/bada_on/service/WeatherService.java

@@ -147,6 +147,7 @@ private List<String> getRecommendActivities(Weather weather, List<TideRecord> ti
 
 		List<String> recommendedActivities = activityScores.entrySet().stream()
 			.filter(entry -> entry.getValue() == maxScore)
+			.filter(entry -> entry.getValue() >= 40)
 			.map(entry -> entry.getKey().getValue())
 			.collect(Collectors.toList());